Organic compound for organic electroluminescent device

Abstract

The present invention discloses a novel organic compound is represented by the following formula(A), the organic EL device employing the compound as blue emitting layer can lower driving voltage, prolong half-lifetime and increase the efficiency. Wherein m represent an integer of 0 to 8, n represent an integer of 0 to 10, p represent an integer of 0 to 7, HAr represent a hydrogen, a halide, a cyanine group, a substituted or unsusbstituted heteroaryl group system having 5 to 6 aromatic ring atoms, R 1 to R 4 are identical or different. R 1 to R 4 are independently selected from the group consisting of a hydrogen atom, alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms.

What is claimed is: 
     
       1. An organic EL compound with a general formula(A) as follows: 
       
         
           
           
               
               
           
         
         wherein m represents an integer of 0 to 8, n represents an integer of 0 to 10, p represents an integer of 0 to 7, HAr represents a hydrogen, a halide, a cyanine group, or a substituted or unsubstituted heteroaryl group system having 5 to 6 aromatic ring atoms; R 1  to R 4  are identical or different, R 1  to R 4  are independently selected from the group consisting of a hydrogen atom, alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms. 
       
     
     
       2. An organic EL compound according to  claim 1 , wherein HAr is represented by the group consisting of fluorine atom, pyridyl group, pyrrolyl group, imidazolyl group, pyrazinyl group, furyl group, thiophene group, and 1,3,5-triazinyl group. 
     
     
       3. A organic EL device comprising a pair of electrodes consisting of a cathode and an anode and between the pairs of the electrodes comprising a layer of material with a general formula(A) as follows: 
       
         
           
           
               
               
           
         
         wherein m represents an integer of 0 to 8, n represents an integer of 0 to 10, p represents an integer of 0 to 7, HAr represent a hydrogen, a halide, a cyanine group, or a substituted or unsubstituted heteroaryl group system having 5 to 6 aromatic ring atoms; R 1  to R 4  are identical or different, R 1  to R 4  are independently selected from the group consisting of a hydrogen atom, alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms. 
       
     
     
       4. An organic EL device according to  claim 3 , wherein the material according to general formula (A) is selected from the group consisting of: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
       5. An organic EL device according to  claim 3 , wherein the material according to general formula (A) functions as a fluorescent emitting layer of the organic EL device. 
     
     
       6. An organic EL device according to  claim 3 , wherein the material according to general formula (A) functions as a fluorescent blue emitting host of the organic EL device.